Document feeder with delayed pulse generator control

Claim 1

MEANS FOR CONTROLLING THE ADVANCEMENT OF DOCUMENTS COMPRISING A DOCUMENT FEEDER, DRIVE MEANS RESPONSIVE TO SIGNALS FOR CYCLICALLY OPERATING SAID FEEDER, DOCUMENT ADVANCING MEANS JUXTAPOSED SAID FEEDER FOR RECEIVING DOCUMENTS FROM SAID FEEDER, A PULSE GENERATOR FOR GENERATING PULSES INDICATIVE OF THE ABSENSE OF DOCUMENTS AT SAID DOCUMENT FEEDER FOR CONTROLLING SAID DRIVE MEANS, SAID PULSE GENERATOR COMPRISING A FIRST TRANSISTOR AMPLIFYING STAGE ADAPTED TO RECEIVE INPUT SIGNALS, A SECOND TRANSISTOR COUPLED TO SAID FIRST TRANSISTOR IN AN EMITTER-FOLLOWER RELATIONSHIP, A UNIJUNCTION TRANSISTOR HAVING AN EMITTER, A FIRST BASE AND A SECOND BASE, UNIDIRECTIONAL CONDUCTING MEANS COUPLED BETWEEN SAID SECOND TRANSISTOR AND SAID EMITTER, CAPACITIVE MEANS COUPLED TO SAID EMITTER, A SOURCE OF POTENTIAL FOR CHARGING SAID CAPACITIVE MEANS, SAID UNIDIRECTIONAL CONDUCTING MEANS PROVIDING A DISCHARGE PATH FOR SAID CAPACITIVE MEANS ONLY WHEN SAID SECOND TRANSISTOR IS IN A CONDITION STATE, MEANS RESPONSIVE TO THE PASSAGE OF DOCUMENTS PROVIDING SAID INPUT SIGNALS TO TURN ON SAID SECOND TRANSISTOR, A PAIR OF OUTPUT SIGNAL MEANS, ONE OF SAID PAIR COUPLED TO SAID FIRST BASE AND THE OTHER OF SAID PAIR COUPLED TO SAID SECOND BASE, AND DOCUMENT DETECTOR MEANS ADJACENT SAID DOCUMENT FEEDER FOR GENERTING INPUT SIGNALS TO SAID FRIST TRANSISTOR AMPLIFYING STAGE TO CONTROL SAID DRIVE MEANS THROUGH SAID PULSE GENERATOR.